Emotet Office (OLE) / .DOCX malware analysis — malicious · 4a6d02a3adc59903

MALICIOUS

Office (OLE) / .DOCX

208.6 KB Created: 2020-12-22 21:50:00 Authoring application: Microsoft Office Word

MD5: 8541023d4c41cd1584773d7d8ca0456f SHA-1: d821df906d56465d9bc19e63c2903befa18f8218 SHA-256: 4a6d02a3adc59903ee067a5abc702d78fb31c61deb56b7360fade2ec85195569

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious downloader. The presence of a 'macros.bas' file further supports this. The embedded document body, though heavily obfuscated, contains strings that suggest an attempt to deceive the user into enabling macros for malicious purposes. The primary attack vector involves the execution of VBA macros to download and run a secondary payload.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `b559ca2a4b6431779fe74d7481a6f916cab3c2b891432c5ee8c97f5a35ecea25`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15388 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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